Percentage of the normal curve
Calculate the percentage of the normal curve located at or above each of the following z values.
a. 1.50 c. - 0.86 e. 1.46
b. - 1.50 d. 0.00 f. - 0.50
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The mean salary of the teachers at Norman High School is $50,000 with a standard deviation of $3,000.What is the probability that a randomly selected teacher earns at least $55,000?
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A mattress store claims that 95% of all its mattress deliveries are on time. Suppose that three mattress deliveries are selected independently from one another.
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